Synchronization control method of reversed shared channel in time division synchronous code division multiple access system

A code division multiple access and shared channel technology, applied in the field of time division synchronization code division multiple access communication, can solve the problem of not providing an uplink synchronization method and the like

Inactive Publication Date: 2012-06-06
ZTE CORP
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Problems solved by technology

[0013] It is precisely because of the characteristics of the above-mentioned trunking service and shared wireless channel allocation that in the TD-SCDMA trunking system, the synchronization control process of the reverse shared channel is different from the uplink synchronization process in the TD-SCDMA public mobile communication system. There is no uplink synchronization method provided in the system

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  • Synchronization control method of reversed shared channel in time division synchronous code division multiple access system
  • Synchronization control method of reversed shared channel in time division synchronous code division multiple access system
  • Synchronization control method of reversed shared channel in time division synchronous code division multiple access system

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Embodiment Construction

[0039] The technical solution of the present invention includes a UE (end user equipment) and a network side, and the network side further includes a Node B (wireless transceiver) and an RNC (radio network controller), wherein the reverse shared channel refers to the channel that exists between the wireless transceiver and the terminal The wireless channel is shared in reverse.

[0040] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041]The wireless access part of the TD-SCDMA system includes UE (End User Equipment) and UTRAN (Radio Access Network), wherein UTRAN further includes RNC (Radio Network Controller) and NodeB (Node B).

[0042] refer to Figure 4 As shown, in the trunking communication system based on TD-SCDMA technology and other point-to-multipoint communication systems, the synchronization control method of the reverse shared channel includes the following steps:

[0043] Step S4...

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Abstract

The method includes the following steps: (1) The Wireless network controller confirms the synchronous controlling parameters of the reversed share channel (RSC), and sends them to wireless emitter / receiver (ER) and terminal user (TU) devices; (2) TU activates random accessing process, and establishes synchronization with ER; (3) TU sends out RSC; (4) ER receives RSC, and estimates the emission time shift of RSC emitted at every time-slot by TU, then, based on the synchronous control parameters (SCP), confirms the types of the synchronous shift command (SSC), and sends synchronous shift commands through forward share channel (FSC); (5) TU receives FSC, extracts SSC; (6) based on the types of SSC and SCP, TU using RSC adjusts the emitting time of RSC.

Description

technical field [0001] The present invention relates to time division synchronous code division multiple access (TD-SCDMA) access communication technology, in particular to a trunking communication system based on time division synchronous code division multiple access technology and reverse communication in other point-to-multipoint communication systems A synchronization control method for a shared channel. Background technique [0002] In the TDSCDMA wireless communication system, the uplink synchronization of the reverse channel (that is, the uplink channel) is an important technical feature. The so-called uplink synchronization means that the signals of the uplink terminals are completely synchronized in the base station demodulator. Through uplink synchronization, the code channels using orthogonal spreading codes can be completely orthogonal during despreading, and there will be no multiple access interference between each other, which overcomes the asynchronous CDMA ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04J3/06
Inventor 张银成刘虎马志锋
Owner ZTE CORP
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